[J-u-boot.git] / include / edid.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2012 The Chromium OS Authors.
 *
 * (C) Copyright 2010
 * Petr Stetiar <[email protected]>
 *
 * Contains stolen code from ddcprobe project which is:
 * Copyright (C) Nalin Dahyabhai <[email protected]>
 */

#ifndef __EDID_H_
#define __EDID_H_

#include <linux/types.h>

/* Size of the EDID data */
#define EDID_SIZE	128
#define EDID_EXT_SIZE	256

/* OUI of HDMI vendor specific data block */
#define HDMI_IEEE_OUI 0x000c03

#define GET_BIT(_x, _pos) \
	(((_x) >> (_pos)) & 1)
#define GET_BITS(_x, _pos_msb, _pos_lsb) \
	(((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))

/* Aspect ratios used in EDID info. */
enum edid_aspect {
	ASPECT_625 = 0,
	ASPECT_75,
	ASPECT_8,
	ASPECT_5625,
};

/* Detailed timing information used in EDID v1.x */
struct edid_detailed_timing {
	unsigned char pixel_clock[2];
#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
	(((((uint32_t)(_x).pixel_clock[1]) << 8) + \
	 (_x).pixel_clock[0]) * 10000)
	unsigned char horizontal_active;
	unsigned char horizontal_blanking;
	unsigned char horizontal_active_blanking_hi;
#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
	((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
	 (_x).horizontal_active)
#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
	((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
	 (_x).horizontal_blanking)
	unsigned char vertical_active;
	unsigned char vertical_blanking;
	unsigned char vertical_active_blanking_hi;
#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
	((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
	 (_x).vertical_active)
#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
	((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
	 (_x).vertical_blanking)
	unsigned char hsync_offset;
	unsigned char hsync_pulse_width;
	unsigned char vsync_offset_pulse_width;
	unsigned char hsync_vsync_offset_pulse_width_hi;
#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
	 (_x).hsync_offset)
#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
	 (_x).hsync_pulse_width)
#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
	 GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
	 GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
	unsigned char himage_size;
	unsigned char vimage_size;
	unsigned char himage_vimage_size_hi;
#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
	((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
	((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
	unsigned char hborder;
	unsigned char vborder;
	unsigned char flags;
#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
	GET_BIT((_x).flags, 7)
#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
	GET_BITS((_x).flags, 6, 5)
#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
	GET_BITS((_x).flags, 4, 3)
#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
	GET_BITS((_x).flags, 2, 1)
#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \
	GET_BIT((_x).flags, 2)
#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \
	GET_BIT((_x).flags, 1)
#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
	GET_BIT((_x).flags, 0)
} __attribute__ ((__packed__));

enum edid_monitor_descriptor_types {
	EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
	EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
	EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
	EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
};

struct edid_monitor_descriptor {
	uint16_t zero_flag_1;
	unsigned char zero_flag_2;
	unsigned char type;
	unsigned char zero_flag_3;
	union {
		char string[13];
		struct {
			unsigned char vertical_min;
			unsigned char vertical_max;
			unsigned char horizontal_min;
			unsigned char horizontal_max;
			unsigned char pixel_clock_max;
			unsigned char gtf_data[8];
		} range_data;
	} data;
} __attribute__ ((__packed__));

struct edid1_info {
	unsigned char header[8];
	unsigned char manufacturer_name[2];
#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
	GET_BIT(((_x).manufacturer_name[0]), 7)
#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
	GET_BITS(((_x).manufacturer_name[0]), 6, 2)
#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
	((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
	 GET_BITS(((_x).manufacturer_name[1]), 7, 5))
#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
	GET_BITS(((_x).manufacturer_name[1]), 4, 0)
	unsigned char product_code[2];
#define EDID1_INFO_PRODUCT_CODE(_x) \
	(((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
	unsigned char serial_number[4];
#define EDID1_INFO_SERIAL_NUMBER(_x) \
	(((uint32_t)(_x).serial_number[3] << 24) + \
	 ((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
	 (_x).serial_number[0])
	unsigned char week;
	unsigned char year;
	unsigned char version;
	unsigned char revision;
	unsigned char video_input_definition;
#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
	GET_BIT(((_x).video_input_definition), 7)
#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
	GET_BITS(((_x).video_input_definition), 6, 5)
#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
	GET_BIT(((_x).video_input_definition), 4)
#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
	GET_BIT(((_x).video_input_definition), 3)
#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
	GET_BIT(((_x).video_input_definition), 2)
#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
	GET_BIT(((_x).video_input_definition), 1)
#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
	GET_BIT(((_x).video_input_definition), 0)
	unsigned char max_size_horizontal;
	unsigned char max_size_vertical;
	unsigned char gamma;
	unsigned char feature_support;
#define EDID1_INFO_FEATURE_STANDBY(_x) \
	GET_BIT(((_x).feature_support), 7)
#define EDID1_INFO_FEATURE_SUSPEND(_x) \
	GET_BIT(((_x).feature_support), 6)
#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
	GET_BIT(((_x).feature_support), 5)
#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
	GET_BITS(((_x).feature_support), 4, 3)
#define EDID1_INFO_FEATURE_RGB(_x) \
	GET_BIT(((_x).feature_support), 2)
#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
	GET_BIT(((_x).feature_support), 1)
#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
	GET_BIT(((_x).feature_support), 0)
	unsigned char color_characteristics[10];
	unsigned char established_timings[3];
#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
	GET_BIT(((_x).established_timings[0]), 7)
#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
	GET_BIT(((_x).established_timings[0]), 6)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
	GET_BIT(((_x).established_timings[0]), 5)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
	GET_BIT(((_x).established_timings[0]), 4)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
	GET_BIT(((_x).established_timings[0]), 3)
#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
	GET_BIT(((_x).established_timings[0]), 2)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
	GET_BIT(((_x).established_timings[0]), 1)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
	GET_BIT(((_x).established_timings[0]), 0)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
	GET_BIT(((_x).established_timings[1]), 7)
#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
	GET_BIT(((_x).established_timings[1]), 6)
#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
	GET_BIT(((_x).established_timings[1]), 5)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
	GET_BIT(((_x).established_timings[1]), 4)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
	GET_BIT(((_x).established_timings[1]), 3)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
	GET_BIT(((_x).established_timings[1]), 2)
#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
	GET_BIT(((_x).established_timings[1]), 1)
#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
	GET_BIT(((_x).established_timings[1]), 0)
#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
	GET_BIT(((_x).established_timings[2]), 7)
	struct {
		unsigned char xresolution;
		unsigned char aspect_vfreq;
	} __attribute__((__packed__)) standard_timings[8];
#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
	(((_x).standard_timings[_i]).xresolution)
#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
	union {
		unsigned char timing[72];
		struct edid_monitor_descriptor descriptor[4];
	} monitor_details;
	unsigned char extension_flag;
	unsigned char checksum;
} __attribute__ ((__packed__));

enum edid_cea861_db_types {
	EDID_CEA861_DB_AUDIO = 0x01,
	EDID_CEA861_DB_VIDEO = 0x02,
	EDID_CEA861_DB_VENDOR = 0x03,
	EDID_CEA861_DB_SPEAKER = 0x04,
};

struct edid_cea861_info {
	unsigned char extension_tag;
#define EDID_CEA861_EXTENSION_TAG	0x02
	unsigned char revision;
	unsigned char dtd_offset;
	unsigned char dtd_count;
#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
	GET_BIT(((_x).dtd_count), 7)
#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
	GET_BIT(((_x).dtd_count), 6)
#define EDID_CEA861_SUPPORTS_YUV444(_x) \
	GET_BIT(((_x).dtd_count), 5)
#define EDID_CEA861_SUPPORTS_YUV422(_x) \
	GET_BIT(((_x).dtd_count), 4)
#define EDID_CEA861_DTD_COUNT(_x) \
	GET_BITS(((_x).dtd_count), 3, 0)
	unsigned char data[124];
#define EDID_CEA861_DB_TYPE(_x, offset) \
	GET_BITS((_x).data[offset], 7, 5)
#define EDID_CEA861_DB_LEN(_x, offset) \
	GET_BITS((_x).data[offset], 4, 0)
} __attribute__ ((__packed__));

/**
 * Print the EDID info.
 *
 * @param edid_info	The EDID info to be printed
 */
void edid_print_info(struct edid1_info *edid_info);

/**
 * Check the EDID info.
 *
 * @param info  The EDID info to be checked
 * @return 0 on valid, or -1 on invalid
 */
int edid_check_info(struct edid1_info *info);

/**
 * Check checksum of a 128 bytes EDID data block
 *
 * @param edid_block	EDID block data
 *
 * @return 0 on success, or a negative errno on error
 */
int edid_check_checksum(u8 *edid_block);

/**
 * Get the horizontal and vertical rate ranges of the monitor.
 *
 * @param edid	The EDID info
 * @param hmin	Returns the minimum horizontal rate
 * @param hmax	Returns the maxium horizontal rate
 * @param vmin	Returns the minimum vertical rate
 * @param vmax	Returns the maxium vertical rate
 * @return 0 on success, or -1 on error
 */
int edid_get_ranges(struct edid1_info *edid, unsigned int *hmin,
		    unsigned int *hmax, unsigned int *vmin,
		    unsigned int *vmax);

struct display_timing;

/**
 * edid_get_timing_validate() - Get basic digital display parameters with
 * mode selection callback
 *
 * @param buf		Buffer containing EDID data
 * @param buf_size	Size of buffer in bytes
 * @param timing	Place to put preferring timing information
 * @param panel_bits_per_colourp	Place to put the number of bits per
 *			colour supported by the panel. This will be set to
 *			-1 if not available
 * @param mode_valid	Callback validating mode, returning true is mode is
 *			supported, false otherwise.
 * @parem valid_priv	Pointer to private data for mode_valid callback
 * @return 0 if timings are OK, -ve on error
 */
int edid_get_timing_validate(u8 *buf, int buf_size,
			     struct display_timing *timing,
			     int *panel_bits_per_colourp,
			     bool (*mode_valid)(void *priv,
					const struct display_timing *timing),
			     void *mode_valid_priv);

/**
 * edid_get_timing() - Get basic digital display parameters
 *
 * @param buf		Buffer containing EDID data
 * @param buf_size	Size of buffer in bytes
 * @param timing	Place to put preferring timing information
 * @param panel_bits_per_colourp	Place to put the number of bits per
 *			colour supported by the panel. This will be set to
 *			-1 if not available
 * @return 0 if timings are OK, -ve on error
 */
int edid_get_timing(u8 *buf, int buf_size, struct display_timing *timing,
		    int *panel_bits_per_colourp);

#endif /* __EDID_H_ */
Commit	Line	Data
83d290c5	1	/* SPDX-License-Identifier: GPL-2.0+ */
d46b5f7d TWHT	2	/*
	3	* Copyright (c) 2012 The Chromium OS Authors.
	4	*
	5	* (C) Copyright 2010
	6	* Petr Stetiar <[email protected]>
	7	*
d46b5f7d TWHT	8	* Contains stolen code from ddcprobe project which is:
d46b5f7d TWHT	9	* Copyright (C) Nalin Dahyabhai <[email protected]>
d46b5f7d TWHT	10	*/
	11
	12	#ifndef __EDID_H_
	13	#define __EDID_H_
	14
	15	#include <linux/types.h>
	16
00cf1167 SG	17	/* Size of the EDID data */
00cf1167 SG	18	#define EDID_SIZE 128
2dcf1433	19	#define EDID_EXT_SIZE 256
00cf1167	20
43c6bdd0 JS	21	/* OUI of HDMI vendor specific data block */
	22	#define HDMI_IEEE_OUI 0x000c03
	23
d46b5f7d TWHT	24	#define GET_BIT(_x, _pos) \
	25	(((_x) >> (_pos)) & 1)
	26	#define GET_BITS(_x, _pos_msb, _pos_lsb) \
	27	(((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))
	28
	29	/* Aspect ratios used in EDID info. */
	30	enum edid_aspect {
	31	ASPECT_625 = 0,
	32	ASPECT_75,
	33	ASPECT_8,
	34	ASPECT_5625,
	35	};
	36
	37	/* Detailed timing information used in EDID v1.x */
	38	struct edid_detailed_timing {
	39	unsigned char pixel_clock[2];
	40	#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
	41	(((((uint32_t)(_x).pixel_clock[1]) << 8) + \
	42	(_x).pixel_clock[0]) * 10000)
	43	unsigned char horizontal_active;
	44	unsigned char horizontal_blanking;
	45	unsigned char horizontal_active_blanking_hi;
	46	#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
	47	((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
	48	(_x).horizontal_active)
	49	#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
	50	((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
	51	(_x).horizontal_blanking)
	52	unsigned char vertical_active;
	53	unsigned char vertical_blanking;
	54	unsigned char vertical_active_blanking_hi;
	55	#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
	56	((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
	57	(_x).vertical_active)
	58	#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
	59	((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
	60	(_x).vertical_blanking)
	61	unsigned char hsync_offset;
	62	unsigned char hsync_pulse_width;
1dc793dd	63	unsigned char vsync_offset_pulse_width;
d46b5f7d TWHT	64	unsigned char hsync_vsync_offset_pulse_width_hi;
	65	#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
	66	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
	67	(_x).hsync_offset)
	68	#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
	69	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
	70	(_x).hsync_pulse_width)
	71	#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
	72	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
	73	GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
	74	#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
	75	((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
	76	GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
	77	unsigned char himage_size;
	78	unsigned char vimage_size;
	79	unsigned char himage_vimage_size_hi;
	80	#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
	81	((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
	82	#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
	83	((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
	84	unsigned char hborder;
	85	unsigned char vborder;
	86	unsigned char flags;
	87	#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
	88	GET_BIT((_x).flags, 7)
	89	#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
	90	GET_BITS((_x).flags, 6, 5)
	91	#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
	92	GET_BITS((_x).flags, 4, 3)
	93	#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
	94	GET_BITS((_x).flags, 2, 1)
b7ce12dd HG	95	#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \
	96	GET_BIT((_x).flags, 2)
	97	#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \
	98	GET_BIT((_x).flags, 1)
d46b5f7d TWHT	99	#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
	100	GET_BIT((_x).flags, 0)
	101	} __attribute__ ((__packed__));
	102
	103	enum edid_monitor_descriptor_types {
	104	EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
	105	EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
	106	EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
	107	EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
	108	};
	109
	110	struct edid_monitor_descriptor {
	111	uint16_t zero_flag_1;
	112	unsigned char zero_flag_2;
	113	unsigned char type;
	114	unsigned char zero_flag_3;
	115	union {
	116	char string[13];
	117	struct {
	118	unsigned char vertical_min;
	119	unsigned char vertical_max;
	120	unsigned char horizontal_min;
	121	unsigned char horizontal_max;
	122	unsigned char pixel_clock_max;
	123	unsigned char gtf_data[8];
	124	} range_data;
	125	} data;
	126	} __attribute__ ((__packed__));
	127
	128	struct edid1_info {
	129	unsigned char header[8];
	130	unsigned char manufacturer_name[2];
	131	#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
	132	GET_BIT(((_x).manufacturer_name[0]), 7)
	133	#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
	134	GET_BITS(((_x).manufacturer_name[0]), 6, 2)
	135	#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
	136	((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
	137	GET_BITS(((_x).manufacturer_name[1]), 7, 5))
	138	#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
	139	GET_BITS(((_x).manufacturer_name[1]), 4, 0)
	140	unsigned char product_code[2];
	141	#define EDID1_INFO_PRODUCT_CODE(_x) \
	142	(((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
	143	unsigned char serial_number[4];
	144	#define EDID1_INFO_SERIAL_NUMBER(_x) \
	145	(((uint32_t)(_x).serial_number[3] << 24) + \
	146	((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
	147	(_x).serial_number[0])
	148	unsigned char week;
	149	unsigned char year;
	150	unsigned char version;
	151	unsigned char revision;
	152	unsigned char video_input_definition;
	153	#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
	154	GET_BIT(((_x).video_input_definition), 7)
	155	#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
	156	GET_BITS(((_x).video_input_definition), 6, 5)
	157	#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
	158	GET_BIT(((_x).video_input_definition), 4)
	159	#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
	160	GET_BIT(((_x).video_input_definition), 3)
	161	#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
	162	GET_BIT(((_x).video_input_definition), 2)
163	#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
164	GET_BIT(((_x).video_input_definition), 1)
165	#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
166	GET_BIT(((_x).video_input_definition), 0)
167	unsigned char max_size_horizontal;
168	unsigned char max_size_vertical;
169	unsigned char gamma;
170	unsigned char feature_support;
171	#define EDID1_INFO_FEATURE_STANDBY(_x) \
172	GET_BIT(((_x).feature_support), 7)
173	#define EDID1_INFO_FEATURE_SUSPEND(_x) \
174	GET_BIT(((_x).feature_support), 6)
175	#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
176	GET_BIT(((_x).feature_support), 5)
177	#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
178	GET_BITS(((_x).feature_support), 4, 3)
179	#define EDID1_INFO_FEATURE_RGB(_x) \
180	GET_BIT(((_x).feature_support), 2)
181	#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
182	GET_BIT(((_x).feature_support), 1)
183	#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
184	GET_BIT(((_x).feature_support), 0)
185	unsigned char color_characteristics[10];
186	unsigned char established_timings[3];
187	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
188	GET_BIT(((_x).established_timings[0]), 7)
189	#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
190	GET_BIT(((_x).established_timings[0]), 6)
191	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
192	GET_BIT(((_x).established_timings[0]), 5)
193	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
194	GET_BIT(((_x).established_timings[0]), 4)
195	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
196	GET_BIT(((_x).established_timings[0]), 3)
197	#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
198	GET_BIT(((_x).established_timings[0]), 2)
199	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
200	GET_BIT(((_x).established_timings[0]), 1)
201	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
202	GET_BIT(((_x).established_timings[0]), 0)
203	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
204	GET_BIT(((_x).established_timings[1]), 7)
205	#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
206	GET_BIT(((_x).established_timings[1]), 6)
207	#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
208	GET_BIT(((_x).established_timings[1]), 5)
209	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
210	GET_BIT(((_x).established_timings[1]), 4)
211	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
212	GET_BIT(((_x).established_timings[1]), 3)
213	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
214	GET_BIT(((_x).established_timings[1]), 2)
215	#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
216	GET_BIT(((_x).established_timings[1]), 1)
217	#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
218	GET_BIT(((_x).established_timings[1]), 0)
219	#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
220	GET_BIT(((_x).established_timings[2]), 7)
221	struct {
222	unsigned char xresolution;
223	unsigned char aspect_vfreq;
224	} __attribute__((__packed__)) standard_timings[8];
225	#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
226	(((_x).standard_timings[_i]).xresolution)
227	#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
228	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
229	#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
230	GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
231	union {
232	unsigned char timing[72];
233	struct edid_monitor_descriptor descriptor[4];
234	} monitor_details;
235	unsigned char extension_flag;
236	unsigned char checksum;
237	} __attribute__ ((__packed__));
d2fabdc7	238
43c6bdd0 JS	239	enum edid_cea861_db_types {
	240	EDID_CEA861_DB_AUDIO = 0x01,
	241	EDID_CEA861_DB_VIDEO = 0x02,
	242	EDID_CEA861_DB_VENDOR = 0x03,
	243	EDID_CEA861_DB_SPEAKER = 0x04,
	244	};
	245
d2fabdc7 HG	246	struct edid_cea861_info {
	247	unsigned char extension_tag;
	248	#define EDID_CEA861_EXTENSION_TAG 0x02
	249	unsigned char revision;
	250	unsigned char dtd_offset;
	251	unsigned char dtd_count;
	252	#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
	253	GET_BIT(((_x).dtd_count), 7)
	254	#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
	255	GET_BIT(((_x).dtd_count), 6)
	256	#define EDID_CEA861_SUPPORTS_YUV444(_x) \
	257	GET_BIT(((_x).dtd_count), 5)
	258	#define EDID_CEA861_SUPPORTS_YUV422(_x) \
	259	GET_BIT(((_x).dtd_count), 4)
	260	#define EDID_CEA861_DTD_COUNT(_x) \
	261	GET_BITS(((_x).dtd_count), 3, 0)
	262	unsigned char data[124];
43c6bdd0 JS	263	#define EDID_CEA861_DB_TYPE(_x, offset) \
	264	GET_BITS((_x).data[offset], 7, 5)
	265	#define EDID_CEA861_DB_LEN(_x, offset) \
	266	GET_BITS((_x).data[offset], 4, 0)
d2fabdc7	267	} __attribute__ ((__packed__));
d46b5f7d TWHT	268
	269	/**
	270	* Print the EDID info.
	271	*
	272	* @param edid_info The EDID info to be printed
	273	*/
	274	void edid_print_info(struct edid1_info *edid_info);
	275
	276	/**
	277	* Check the EDID info.
	278	*
	279	* @param info The EDID info to be checked
	280	* @return 0 on valid, or -1 on invalid
	281	*/
	282	int edid_check_info(struct edid1_info *info);
	283
e745d064 HG	284	/**
	285	* Check checksum of a 128 bytes EDID data block
	286	*
	287	* @param edid_block EDID block data
	288	*
	289	* @return 0 on success, or a negative errno on error
	290	*/
	291	int edid_check_checksum(u8 *edid_block);
	292
d46b5f7d TWHT	293	/**
	294	* Get the horizontal and vertical rate ranges of the monitor.
	295	*
	296	* @param edid The EDID info
	297	* @param hmin Returns the minimum horizontal rate
	298	* @param hmax Returns the maxium horizontal rate
	299	* @param vmin Returns the minimum vertical rate
	300	* @param vmax Returns the maxium vertical rate
	301	* @return 0 on success, or -1 on error
	302	*/
	303	int edid_get_ranges(struct edid1_info edid, unsigned int hmin,
	304	unsigned int hmax, unsigned int vmin,
	305	unsigned int *vmax);
	306
00cf1167 SG	307	struct display_timing;
00cf1167 SG	308
1c1ed441 NA	309	/**
	310	* edid_get_timing_validate() - Get basic digital display parameters with
	311	* mode selection callback
	312	*
	313	* @param buf Buffer containing EDID data
	314	* @param buf_size Size of buffer in bytes
	315	* @param timing Place to put preferring timing information
	316	* @param panel_bits_per_colourp Place to put the number of bits per
	317	* colour supported by the panel. This will be set to
	318	* -1 if not available
	319	* @param mode_valid Callback validating mode, returning true is mode is
	320	* supported, false otherwise.
	321	* @parem valid_priv Pointer to private data for mode_valid callback
	322	* @return 0 if timings are OK, -ve on error
	323	*/
	324	int edid_get_timing_validate(u8 *buf, int buf_size,
	325	struct display_timing *timing,
	326	int *panel_bits_per_colourp,
	327	bool (mode_valid)(void priv,
	328	const struct display_timing *timing),
	329	void *mode_valid_priv);
	330
00cf1167 SG	331	/**
	332	* edid_get_timing() - Get basic digital display parameters
	333	*
	334	* @param buf Buffer containing EDID data
	335	* @param buf_size Size of buffer in bytes
	336	* @param timing Place to put preferring timing information
	337	* @param panel_bits_per_colourp Place to put the number of bits per
	338	* colour supported by the panel. This will be set to
	339	* -1 if not available
	340	* @return 0 if timings are OK, -ve on error
	341	*/
	342	int edid_get_timing(u8 buf, int buf_size, struct display_timing timing,
	343	int *panel_bits_per_colourp);
	344
d46b5f7d	345	#endif /* __EDID_H_ */